Price listed is for each one ounce package of split rings. These are approximately 4mm gunmetal plated split rings. They appear to be plated iron. The inside measurement is about 3mm. There should be about 530 split rings in every ounce. There may be a few split rings that are slightly discolored. We cannot guarantee the number you will receive, only the weight. The manufacture states that these are lead, nickel and cadmium free.